Returning list of tx hash in a block

[jl2012]

In the future release of armoryd, I wonder if you may consider to add an API command, which will return a list of tx hash in a block, or the tx hash of the n-th tx in a block.

It would be very useful for the following proposal:

https://github.com/NicolasDorier/BIP-MnemoReference/blob/master/bip-mnemo.mediawiki